Spiderfly Studios has a knack for developing apps that extend Android's functionality in the least obtrusive way possible. Their most popular app thus far, Glowfly, offers holo-friendly SMS popup notifications with support for images and sending quick replies. Their latest offering, Stormfly, offers HD wallpapers that change as the weather does. It's not an original concept by any means, but the studio has managed to throw together an app that does this in the most integrated way possible, and they do so without putting much of a strain on bandwidth.